当前位置：
X-MOL 学术
›
Nano Lett.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Metastable Superconductivity in Two-Dimensional IrTe2 Crystals
Nano Letters ( IF 9.6 ) Pub Date : 2018-04-03 00:00:00 , DOI: 10.1021/acs.nanolett.8b00673 Masaro Yoshida 1, 2 , Kazutaka Kudo 3 , Minoru Nohara 3 , Yoshihiro Iwasa 1, 2
Nano Letters ( IF 9.6 ) Pub Date : 2018-04-03 00:00:00 , DOI: 10.1021/acs.nanolett.8b00673 Masaro Yoshida 1, 2 , Kazutaka Kudo 3 , Minoru Nohara 3 , Yoshihiro Iwasa 1, 2
Affiliation
|
Two-dimensional (2D) materials exhibit unusual physical and chemical properties that are attributed to the thinning-induced modification of their electronic band structure. Recently, reduced thickness was found to dramatically impact not only the static electronic structure, but also the dynamic ordering kinetics. The ordering kinetics of first-order phase transitions becomes significantly slowed with decreasing thickness, and metastable supercooled states can be realized by thinning alone. We therefore focus on layered iridium ditelluride (IrTe2), a charge-ordering system that is transformed into a superconductor by suppressing its first-order transition. Here, we discovered a persistent superconducting zero-resistance state in mechanically exfoliated IrTe2 thin flakes. The maximum superconducting critical temperature (Tc) was identical to that which is chemically optimized, and the emergent superconductivity was revealed to have a metastable nature. The discovered robust metastable superconductivity suggests that 2D material is a new platform to induce, control, and functionalize metastable electronic states that are inaccessible in bulk crystals.
中文翻译：
二维IrTe 2晶体中的亚稳态超导
二维（2D）材料显示出不寻常的物理和化学特性，这归因于电子带结构的稀化诱导修饰。近来，发现减小的厚度不仅极大地影响了静态电子结构，而且还极大地影响了动态有序动力学。随着厚度的减小，一阶相变的有序动力学变得明显减慢，并且仅通过变薄就可以实现亚稳态的过冷状态。因此，我们将重点放在层状二碲化铱（IrTe 2）上，该电荷有序系统通过抑制其一阶跃迁而转变为超导体。在这里，我们发现了机械剥落的IrTe 2中存在持久的超导零电阻状态薄片。最大超导临界温度（T c）与化学优化的最高温度相同，并且揭示出的超导性具有亚稳态性质。已发现的鲁棒的亚稳态超导性表明2D材料是诱导，控制和功能化大块晶体中无法获得的亚稳态电子态的新平台。
更新日期：2018-04-03
中文翻译：
二维IrTe 2晶体中的亚稳态超导
二维（2D）材料显示出不寻常的物理和化学特性，这归因于电子带结构的稀化诱导修饰。近来，发现减小的厚度不仅极大地影响了静态电子结构，而且还极大地影响了动态有序动力学。随着厚度的减小，一阶相变的有序动力学变得明显减慢，并且仅通过变薄就可以实现亚稳态的过冷状态。因此，我们将重点放在层状二碲化铱（IrTe 2）上，该电荷有序系统通过抑制其一阶跃迁而转变为超导体。在这里，我们发现了机械剥落的IrTe 2中存在持久的超导零电阻状态薄片。最大超导临界温度（T c）与化学优化的最高温度相同，并且揭示出的超导性具有亚稳态性质。已发现的鲁棒的亚稳态超导性表明2D材料是诱导，控制和功能化大块晶体中无法获得的亚稳态电子态的新平台。
京公网安备 11010802027423号